You might have heard of the name Gree and DeNA, companies running two monopolistic social gaming platforms, GREE and Mobage. Gree became widely known for buying out Openfeint and Funzio, and recently opening its international GREE Platform. Meanwhile DeNA acquired ngmoco and recently released "Rage of Bahamut" in the U.S. which ranked in top of the grossing chart in both Apple App Store and Google Play.


But how about LINE? -Well, this is the name of the instant messaging app that has a great impact which might be a threat to Facebook and GREE as a gaming platform.